2015 | OriginalPaper | Buchkapitel
KDM-CCA Security from RKA Secure Authenticated Encryption
verfasst von : Xianhui Lu, Bao Li, Dingding Jia
Erschienen in: Advances in Cryptology -- EUROCRYPT 2015
Verlag: Springer Berlin Heidelberg
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We propose an efficient public key encryption scheme which is key-dependent message secure against chosen ciphertext attacks (KDM-CCA) with respect to affine functions based on the decisional composite residuosity assumption. Technically, we achieve KDM-CCA security by enhancing a chosen ciphertext secure scheme based on the high entropy hash proof system with three tools: a key-dependent message encoding, an entropy filter and an authenticated encryption secure against related-key attacks.